Word is the Rolling Stones are gearing up for a 50th anniversary world tour, but it's not the group who leaked the news. While in the past the band have made their big tour reveals via press conferences, news of the trip leaked in a most uncomfortable way: a lawsuit filed against concert promotion magnate Live Nation from former chairman Michael Cohl.

According to the Hollywood Reporter, Cohl (who was himself sued by his former employer for breaching his contract when he quit back in 2008) has filed suit against the industry giant, claiming it tried to "interfere" and "destroy" his attempts to get the promotional rights to the Stones' tour, rumoured to take place later this year.

The disagreement involves Live Nation trying to undercut Cohl's bid for the tour by allegedly demanding the details of Cohl's negotiations with the group. While originally the tour was to be a joint venture between Cohl and Live Nation, the company allegedly attempted to take over his promotional rights for the tour.

The Rolling Stones have yet to comment on the business spat, with Cohl's lawsuit explaining that the band don't want to get dragged into the dispute.